CN110566612B - Structure for reducing dragging torque of automobile brake calipers and working method - Google Patents
Structure for reducing dragging torque of automobile brake calipers and working method Download PDFInfo
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- CN110566612B CN110566612B CN201910782157.7A CN201910782157A CN110566612B CN 110566612 B CN110566612 B CN 110566612B CN 201910782157 A CN201910782157 A CN 201910782157A CN 110566612 B CN110566612 B CN 110566612B
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- piston
- master cylinder
- main cylinder
- calliper
- ecu
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
- F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/02—Fluid pressure
- F16D2121/04—Fluid pressure acting on a piston-type actuator, e.g. for liquid pressure
Abstract
The invention provides a structure for reducing dragging torque of automobile brake calipers and a working method thereof, wherein the structure comprises an ECU (electronic control Unit), a transmission mechanism, a secondary main cylinder piston, calipers, the caliper piston and a sealing ring, when the ECU judges that a driver releases a brake pedal, the secondary main cylinder piston is retracted to an original point, an electromagnetic valve is closed, the secondary main cylinder piston continues to move in a retracting manner, a certain negative pressure is formed in the secondary main cylinder, the caliper piston is further retracted with the help of atmospheric pressure, and friction between a friction plate and a brake disc is reduced or eliminated, so that the dragging torque of the brake calipers is reduced or eliminated.
Description
Technical Field
The invention relates to the field of vehicle braking, in particular to a structure for reducing dragging torque of automobile brake calipers and a working method.
Background
At present in the vehicle braking field, use calliper to brake the wheel to in order to guarantee the leakproofness in the calliper, can install the sealing washer on the calliper piston, but when the braking was relieved in the pressure release, the calliper return back because sealing washer and calliper inner wall closely laminate, can produce the dragging moment after the return, lead to having certain loading capacity between brake disc and the friction disc, influence the life of braking. The dragging torque of the traditional automobile brake caliper is difficult to reduce or eliminate, in the existing WCBS configuration, a one-way valve is arranged between a secondary main cylinder and a liquid storage tank, the pressure difference between the two sides is about 0.3bar, the resistance is about 200 and 300N for the cylinder diameter of 57mm, and the negative pressure of 0.3bar cannot be pushed. Therefore, it is very important to solve the problem that the dragging torque of the conventional automobile brake caliper is difficult to reduce or eliminate.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a structure and a working method for reducing the dragging torque of an automobile brake caliper.
The invention provides a structure for reducing dragging torque of automobile brake calipers, which comprises an ECU (electronic control Unit), a transmission mechanism, a secondary main cylinder piston, calipers, a caliper piston and a sealing ring, wherein the ECU is in electric signal connection with the transmission mechanism, the ECU controls the transmission mechanism to act, the transmission mechanism drives the secondary main cylinder piston to move in the secondary main cylinder, oil returns to the secondary main cylinder from the calipers, the pressure on the caliper piston disappears, an electromagnetic valve is arranged on the secondary main cylinder, the electromagnetic valve is closed after the secondary main cylinder piston returns to an original point, the secondary main cylinder piston continues to move in a retracting manner, negative pressure is formed in the secondary main cylinder, and the caliper piston further returns with the help of atmospheric.
The electromagnetic valve is arranged between the auxiliary main cylinder and the oil can and is in electric signal connection with the ECU.
The invention also provides a working method of the structure for reducing the dragging torque of the automobile brake caliper, which comprises the steps of closing the electromagnetic valve after the piston of the auxiliary main cylinder retracts to the original point when the ECU judges that the brake pedal is released by a driver, continuing to retract, forming negative pressure in the auxiliary main cylinder, and further retracting the piston of the caliper with the help of atmospheric pressure to reduce or eliminate the friction between the friction plate and the brake disc, thereby reducing or eliminating the dragging torque of the brake caliper.
The further improvement lies in that: the calliper piston moves along with the calliper piston at the sealing washer when the return, and carries out supplementary return through atmospheric pressure, reduces the dragging moment of sealing washer.
The invention has the beneficial effects that: when the ECU judges that the driver releases the brake pedal, the auxiliary main cylinder piston is closed after retreating to the original point, the electromagnetic valve continues to retreat and move, a certain negative pressure is formed in the auxiliary main cylinder, the caliper piston is further returned with the help of atmospheric pressure, and friction between the friction plate and the brake disc is reduced or eliminated, so that dragging torque of the brake caliper is reduced or eliminated, the service life of the brake equipment is prolonged, and energy consumption is saved.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Wherein: 1-ECU, 2-transmission mechanism, 3-auxiliary main cylinder, 4-auxiliary main cylinder piston, 5-caliper, 6-caliper piston, 7-sealing ring, 8-electromagnetic valve.
Detailed Description
For the purpose of enhancing understanding of the present invention, the present invention will be further described in detail with reference to the following examples, which are provided for illustration only and are not to be construed as limiting the scope of the present invention.
As shown in fig. 1, the present embodiment provides a structure for reducing a dragging torque of an automobile brake caliper, including an ECU1, a transmission mechanism 2, a sub-master cylinder 3, a sub-master cylinder piston 4, a caliper 5, a caliper piston 6, and a sealing ring 7, where the ECU1 is electrically connected to the transmission mechanism 2, and controls the transmission mechanism 2 to operate through an ECU1, the transmission mechanism 2 drives the sub-master cylinder piston 4 to move in the sub-master cylinder 3, oil returns to the sub-master cylinder 3 from the caliper 5, pressure on the caliper piston 6 disappears, the sub-master cylinder 3 is provided with an electromagnetic valve 8, after the sub-master cylinder piston 4 retracts to an original point, the electromagnetic valve 8 is closed, the sub-master cylinder 3 continues to retract, a negative pressure is formed in the sub-master cylinder 3, and the caliper piston 6 further. The solenoid valve 8 is disposed between the sub-master cylinder 3 and the oil can, and is electrically connected to the ECU 1.
The embodiment also provides a working method of the structure for reducing the dragging torque of the automobile brake caliper, which comprises the steps of closing the electromagnetic valve 8 after the piston 4 of the auxiliary main cylinder retracts to the original point when the ECU1 judges that the brake pedal is released by a driver, continuing to retract, forming negative pressure in the auxiliary main cylinder 3, and further retracting the piston 6 of the caliper with the help of atmospheric pressure to reduce or eliminate the friction between the friction plate and the brake disc, so that the dragging torque of the brake caliper is reduced or eliminated. Caliper piston 6 moves together along with calliper piston 6 when the return, and carries out supplementary return through atmospheric pressure, reduces the dragging moment of sealing washer 7. When the ECU1 judges that the driver releases the brake pedal, the auxiliary main cylinder piston 4 is retracted to the original point, the electromagnetic valve 8 is closed, the auxiliary main cylinder piston continues to retract, a certain negative pressure is formed in the auxiliary main cylinder 3, the caliper piston 6 is further retracted with the help of atmospheric pressure, and friction between a friction plate and a brake disc is reduced or eliminated, so that dragging torque of the brake caliper is reduced or eliminated, the service life of the brake equipment is prolonged, and energy consumption is saved.
Claims (4)
1. The utility model provides a reduce structure that car brake caliper drags moment which characterized in that: including ECU (1), drive mechanism (2), vice master cylinder (3), vice master cylinder piston (4), calliper (5), calliper piston (6) and sealing washer (7), ECU (1) and drive mechanism (2) signal connection, through ECU (1) control drive mechanism (2) action, drive mechanism (2) drive vice master cylinder piston (4) and move in vice master cylinder (3), during fluid gets back to vice master cylinder (3) from calliper (5), pressure on calliper piston (6) disappears, be provided with solenoid valve (8) on vice master cylinder (3), vice master cylinder piston (4) close solenoid valve (8) after the initial point is being backed back to, continue to back the removal, form the negative pressure at vice master cylinder (3), under atmospheric pressure's help, let calliper piston (6) further return.
2. The structure for reducing the drag torque of an automotive brake caliper according to claim 1, wherein: the electromagnetic valve (8) is arranged between the auxiliary main cylinder (3) and the oil can and is in electric signal connection with the ECU (1).
3. A method of operating a structure for reducing the drag torque of an automotive brake caliper according to claim 1 or 2, characterized in that: the method comprises the steps that when the ECU (1) judges that a driver releases a brake pedal, after the auxiliary main cylinder piston (4) retracts to the original point, the electromagnetic valve (8) is closed, the auxiliary main cylinder piston continues to retract and move, negative pressure is formed in the auxiliary main cylinder (3), the caliper piston (6) further retracts under the help of atmospheric pressure, friction between a friction plate and a brake disc is reduced or eliminated, and accordingly dragging torque of the brake caliper is reduced or eliminated.
4. The operating method of a structure for reducing the drag torque of an automobile brake caliper according to claim 3, wherein: calliper piston (6) sealing washer (7) move together along with calliper piston (6) when the return, and carry out supplementary return through atmospheric pressure, reduce the dragging moment of sealing washer (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910782157.7A CN110566612B (en) | 2019-08-23 | 2019-08-23 | Structure for reducing dragging torque of automobile brake calipers and working method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910782157.7A CN110566612B (en) | 2019-08-23 | 2019-08-23 | Structure for reducing dragging torque of automobile brake calipers and working method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110566612A CN110566612A (en) | 2019-12-13 |
| CN110566612B true CN110566612B (en) | 2021-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910782157.7A Active CN110566612B (en) | 2019-08-23 | 2019-08-23 | Structure for reducing dragging torque of automobile brake calipers and working method |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115095616A (en) * | 2022-06-09 | 2022-09-23 | 中国第一汽车股份有限公司 | Independent parking EPB brake caliper device, method for reducing dragging torque of independent parking EPB brake caliper device and vehicle |
| CN115352421B (en) * | 2022-09-07 | 2023-05-23 | 东风柳州汽车有限公司 | Negative pressure control braking circuit |
| CN115539537B (en) * | 2022-11-09 | 2023-09-29 | 武汉万向汽车制动器有限公司 | EPB brake caliper |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004232684A (en) * | 2003-01-29 | 2004-08-19 | Tochigi Fuji Ind Co Ltd | Clutch device |
| JP2005349917A (en) * | 2004-06-09 | 2005-12-22 | Nissan Motor Co Ltd | Sub-driving wheel driving unit control device of four-wheel drive vehicle |
| JP2009257432A (en) * | 2008-04-15 | 2009-11-05 | Univance Corp | Driving force distributing device and its manufacturing method |
| CN201432654Y (en) * | 2009-06-18 | 2010-03-31 | 宫建 | Multi-functional plunger type automobile brake master cylinder |
| CN203009663U (en) * | 2012-12-30 | 2013-06-19 | 麦格纳斯太尔汽车技术（上海）有限公司 | Automobile brake device of caliper dragging torque and liquid measure displacement optimization |
| CN206615206U (en) * | 2017-04-01 | 2017-11-07 | 吉林大学 | Brake the secondary master cylinder bi-motor line traffic control brake fluid system of two-chamber |
| CN106904160A (en) * | 2017-04-12 | 2017-06-30 | 潘泓冰 | A kind of vehicle brake fluid pressure power assisting device and its boosting method |
| CN207795913U (en) * | 2018-01-22 | 2018-08-31 | 北京新能源汽车股份有限公司 | A kind of brake caliper assembly and automobile |
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| CN110566612A (en) | 2019-12-13 |
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